I recently installed Ubuntu 8.04 on my desktop. When I connect my Sansa e280 via USB, it automounts and opens Rhythmbox. It also brings up a drive icon on the desktop. Everything seems hunky dory, but when I try to copy files to the player, it tells me that it's 'Read-only'.

I've read through many posts on the Sansa e200 players on www.ubuntuforums.org, to no avail. I thought I would try here to see if anyone can help me out, or at least point me in the right direction.